患儿，男，3小时。主诉：呻吟3小时。患儿系2胎2产，孕33周自然分娩，羊水清亮，无脐绕颈，生后无窒息，哭声较小，且呻吟不止。未开奶，未排大小便。患儿呻吟进行性加重伴哭声低弱，口周青紫，口吐白沫，四肢青紫，给予吸氧、清理呼吸道，但呼吸困难无明显缓解。体格检查：T35．5℃，P160次/分，R70次/分，Wt1．2kg，一般情况差，营养差，嗜睡，反应差，哭声低弱，有呻吟，四肢青紫，面色尚红润，皮肤弹性差，无硬肿，无黄疸，前囟2．0cm×2．0cm，平坦，无产瘤及头颅血肿，三凹征（+），双肺呼吸音低，未闻及干、湿性啰音，心脏听诊未闻及病理性杂音，腹平软，肝肋下2cm，剑下1cm，肠鸣音减弱，脐带未脱，脐轮无红肿，四肢活动少，无畸形，肌张力减弱，前臂弹回（+），围巾征（+），腘角120。吸吮反射较弱，觅食、握持，拥抱反射未引出，竖颈、踏步反射未引出。实验室检查：1．血常规WBC5．6×10⁹/L，N54%，L46%，RBC7．2×10¹²/L，Hb170g/L。2．尿、粪常规：（-）；3血气分析：pH7．32mmHg，PCO₂44．9mmHg，PO₂60．0mmol/l，cHCO₂[3gif]16．1mmol/l，BE-8．2mmol/l，SO89．5%；4．肝肾功：正常；5．电解质：Na136．9mmol/l；K5025mmol/l；iCa1．02mmol/l。5．胸部正位片：生后4小时胸片显示：右肺中、上野透光度减低，其内密度欠均匀，边界不清，右心缘结构不清，右肺门不清，左肺野未见具体活动性病灶，心左缘及左肺门不清。心影未见增大。两膈顶光滑，左肋膈角锐利。生后12小时胸片显示：胸廓对称，双肺透亮度减低，可见由肺门向外伸展至肺野内的支气管充气征。心脏大小形态未见异常。双侧肋膈角锐利，膈顶圆滑。

如何治疗？

For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never ending flood of words. In (1) a job or advancing in one, the ability to read and comprehend (2) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (3) readers. Most of us develop poor reading (4) at an early age, and never get over them. The main deficiency (5) in the actual stuff of language itself—words. Taken individually, words have (6) meaning until they are strung together into phrases, sentences and paragraphs. (7) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (8) words or passages. Regression, the tendency to look back over (9) you have just read, is a common bad habit in reading. Another habit which (10) down the speed of reading is vocalization—sounding each word either orally or mentally as (11) reads.

To overcome these bad habits, some reading clinics use a device called an (12) , which moves a bar(or curtain) down the page at a predetermined speed. The bar is set at a slightly faster rate (13) the reader finds comfortable, in order to "stretch" him. The accelerator forces the reader to read fast, (14) word by word reading, regression and subvocalization practically impossible. At first (15) is sacrificed for speed. But when you learn to read ideas and concepts, you will not only read faster, (16) your comprehension will improve. Many people have found (17) reading skill drastically improved after some training. (18) Charlie Au, a business manager, for instance. His reading rate was a reasonably good 172 words a minute(19) the training; now it is an excellent 1,378 words a minute. He is delighted that how he can (20) a lot more reading material in a short period of time.

第（12）空应选择（）

A．accelerator

B．actor

C．amplifier

D．observer